Starter booster



Nov. 14, 1950 E. DAvoLT 2,529,921

STARTER BOOSTER Filed May 6, 1946 f1 \|5 'a lm? ELTON DAVOLT H 7- TURA/EY Patented Nov. 14, 1950 UNITED STATES PATENT OFFICE STARTER BOSTER nimm Davon, Kelso, Wash.

ApplicationMay 6, 1946, Serial No. 667,518

6 Claims. 1

The principal object of my invention is to eliminate the difficulty in starting a motor car engine or any spark red engine due to a weak spark at the plugs, especially when the motor is cold and stiff, as in cold weather, When a heavy load is drained from the battery by the starter.

One of the objects of this invention is to provide an inexpensive compact form of starter booster which may be readily installed upon any type of automobile.

Another object of this invention is to provide a starter booster which is inexpensive to manufacture, eflicient in operation, and easily installed Without material change of any of the motor parts of the ignition, starter and battery of an ordinary automobile.

Another object of this invention is to provide an auxiliary starter booster which will step up the spark energy upon starting a car and thereby overcome the additional load required for starting when the motor is cold and add to the enicency of a weak battery.

Another object of this invention is to provide a starter booster adapted to improve the eiiiciency of the starting equipment without the necessity of an auxiliary battery.

One of the novel features of this ignition booster system is the simplicity of its construction in having only two mainrnechanical parts.

I accomplish the objects of this invention in the manner set forth in the specication and accompanying drawing in which Fig. lA is a diagrammatic illustration of the circuit booster motor, generator and circuit connections as used in connection with my improved starter booster.

Fig. 2 is a diagrammatic illustration of a moisture proof receptacle adapted to contain the starter booster motor, generator and circuit connections, the outlets and terminals being designated by the numbers I, 4, 5 and 9.

The wiring, circuit breaker switch and motorgenerator set are all of a character which may be obtained on the market and the novelty of the invention lies in the proper adaptation of its parts to the unit for the purposes required and in the manner the units are connected with the ignition and starter circuits. The auxiliary motorgenerator set Ill-II is oi the single unit type. In an automobile using the six volt battery the motor I0 of the motor-generator set should be a six volt motor and the generator I I of the booster set should be a three volt generator. Terminal I connects with the ignition switch Ia, terminal 4 connects with the spark coil primary 4a, terminal system Y 5 connects with the starter switch 5a and terminal 9 connects with the ground of the ignition system.

When the ignition switch is closed and the motor-generator set is not in operation the current ows through terminal I, conductor 2, circuit breaker 3, conductor l2 and output terminal 4, connecting with spark coil primary 4a. Y

When starter switch 5e is closed a sufficient portion of the current flows from thebattery through terminal 5 to conductor to energize the motor I0 of the motor-generator set Ill-il and magnetic coil l' thus breaking contacts I4 and I5 of they circuit breaker 3.

With the circuit breaker open and motor-generator set Iii-II in operation the current from the battery which is not used to energize motor Ill of the motor-generator set IU--II flows through conductor `2 to the negative pole, or terminal, of the generator 'l I of the auxiliary motor-V generator set IIB-I l, unites with the current developed bythe generator il of the booster-generator seti i I and passes out through the positive output terminal; and the combined current from-the battery and from the generator IIqo the auxiliary motor-generator vset I.-IIgows throughjthe wire 2b, the conductor I2 andoutput terminal 4 to the spark coil primary 4d, then to the ground). l

K The Vstarter booster system is enclosed in a moisturev proof container I5 with fourterminal connections as indicated by Fig. 2.'

Terminal l connects with the regular ignition switch Ia. `Terminal ll connects with the spark coil primary 4a. Terminal 5 connects with the regulator starter switch 5a, and terminal 9 connects with the ground. By reversing the terminals on the motor-generator set Ill-EI this unit may be used on any ignition system with polarity reversed from the system contemplated by the description in this speciiication.

The container I@ may be located at any place beneath the hood of an automobile, which is convenient for making the connections. The nre wall or dash panel just beneath the hood will usually be found to be such a location.

When the switch 5a is open, the breaker points I4 and I5 of circuit breaker 3 are closed by means of the normal position of the spring element I3; and all effect of the motor-generator set IU-II will be eliminated. The starter motor of the automobile is connected by the wire 5b with the output terminal of the regular starter motor switch 5a. It is apparent that when thus connected magnetic coil l and the motor-generator set l-wl I will operate only during the period that 3 the starter motor switch is closed and that upon releasing the starter motor switch a direct circuit, eliminating the motor-generator unit, will then be re-established through circuit breaker 3, contact points I4 and l5, conductor I2 and terminal 4 to spark coil primary 4a.

Having described my improved starter booster system what I claim is:

1. In an engine starting system comprising a battery, a starter motor, a switch therefor and a spark coil primary circuit: an auxiliary motorgenerator set; electric conducting means, connecting the starter motor switch with the auxiliary motor-generator set, adapted to establish activating means to the auxiliary motor-generator set by establishing electrical connection between said :set and the battery during the period the starter switch is closed; electric conducting connection between the generator of the auxiliary motor-generator set and the spark coil primary circuit, adapted to cause current to iiow from the auxiliary motor-generator to the spark coil primary circuit during the time the starter motor switch is closed.

2. In an engine starting system comprising a battery, a starter motor, a switch therefor and a spark coil primary circuit; a starting booster device, consisting of a motor-generator set, connected by an electric conductor with the starter motor circuit so as to be activated by closing the starter motor circuit by closing the starter motor switch and electric conducting means connecting the auxiliary motor-generator set with the ignition system current at the time of starting the starter motor.

3. In an engine starting system comprising a battery, a starter motor, a switch therefor and a spark coil primary circuit; an auxiliary motorgenerator Set; electric current flow connecting means between the battery and the motor of the auxiliary motor-generator set, said electric iiow connecting means being adapted to establish a flow of current from the battery to the motorgenerator set by closing of the starter motor switch; and, electric flow connecting means between the generator of the auxiliary motor-generator set and the spark coil primary circuit.

4. In an engine starting system comprising a battery, a starter motor, a switch therefor and a spark coil primary circuit: a starting booster device consisting of an electric motor-generator set, connected by electric conductor means with the starting motor circuit and with the ignition Systern primary circuit current while the starter motor current switch is closed.

5. In an engine starting system comprising a battery, a starter motor, a switch therefor and a spark coil primary circuit: an auxiliary motorgenerator set; electric flow connection means between the battery and the motor of the auxiliary motor-generator set, said connecting means being adapted to close the connecting means and establish a flow from the battery to the generator of the motor-generator setV when the switch to the starter motor is closed, said means including an electric magnetic device, breaker points in the main ignition circuit adapted to being opened by activating the electromagnet device by closing the starter motor switch; and, electric current conducting means between the generator of the auxiliary motor-generator set and the spark coil primary circuit, adapted to supplement the spark coil primary circuit during the time the breaker points are open.

- 6. In an article of manufacture for convenience of handling in the automobile supply business; a starter booster comprising an auxiliary motorgenerator set in a sealed container, adapted to being attached to the iire wall, engine or frame ofthe automobile, said motor-generator set being connected to electric conductors extending in the form of terminals beyond the sealed container adapted for connecting said terminals by electric conducting means to the starting motor switch, the main ignition circuit, the spark coil primary circuit and the ground, the starter switch connection being adapted to establish an activating current from the battery to the motor'of the auxiliary motor-generator set, said'device being adapted for Vuse in connection with the starter system of an automobile having a battery, a starter motor, a switch therefor and a spark coil primary circuit.

ELTON DAVOLT.

REFERENCES CITED The following references are of record in the iile of this patent: v

UNITED STATES PATENTS 

